<template>
	<div class="todo-header">
		<input v-model="title" @keyup.enter="addT" type="text" placeholder="请输入你的任务名称，按回车键确认"/>
	</div>
</template>

<script>
	export default {
		name:'Header',
		data(){
			return {
				title:''
			}
		},
		methods:{
			addT(){
				//获取用户的输入
				const {title} = this
				if(!title.trim()) return alert('输入不能为空！')
				//包装成一个Todo对象
				const todoObj = {id:Date.now(),title,done:false}
				//通知App加一个
				this.addTodo(todoObj)
				//清空输入
				this.title = ''
			}
		},
		props:['addTodo'],
	}
</script>

<style scoped>
	/*header*/
	.todo-header input {
		width: 560px;
		height: 28px;
		font-size: 14px;
		border: 1px solid #ccc;
		border-radius: 4px;
		padding: 4px 7px;
	}
	.todo-header input:focus {
		outline: none;
		border-color: rgba(82, 168, 236, 0.8);
		box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.075), 0 0 8px rgba(82, 168, 236, 0.6);
	}
</style>